Malicious PDF — malware analysis report

Static analysis result for SHA-256 538e0aaafe8686c1…

MALICIOUS

PDF

60.1 KB Created: 2020-08-08 12:29:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6dda3fa7955ee3b07423f80b27f2a9c7 SHA-1: 6779521e57de19a5a92368fdce6fe21370d25bec SHA-256: 538e0aaafe8686c1744002e4c4d26350c2e3bb5df2ddab08beae7a91ada3a60a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one heuristic specifically identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting a lure for downloading a novel, which aligns with the malicious redirector's purpose. The presence of a link farm heuristic further indicates an attempt to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=download+novel+bridge+to+terabithia+bahasa+indonesia+pdf In PDF document text
    • http://wudujoki.marchmontpark.com/uploads/1/3/0/7/130776728/wisofixumirig.pdfIn PDF document text
    • http://files.duhamelsomerville.org/uploads/1/3/0/8/130813095/5435361b.pdfIn PDF document text
    • http://files.angardencentre.co.nz/uploads/1/3/1/3/131380469/jupuk.pdfIn PDF document text
    • http://files.distrixgames.com/uploads/1/3/1/4/131409210/josiza_jujefeluneli.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8995/2922/files/kezedanal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1653/5720/files/2204355_i_m_feeling_lucky.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/47724192579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2631/6455/files/nomenclatura_de_cetonas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7672/8485/files/85641304881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/liwuweravizena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1351/2100/files/worship_songs_chords_and_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0681/9477/files/6708292435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4306/0901/files/56483716659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1387/2548/files/madugipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1028728638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1059/6765/files/megabytes_to_bytes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7279/6325/files/12528332941.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aaee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAEE 5596 bytes
SHA-256: 619e244c37f5a04ddb77772e21fab99140ea1b49b5f0032de6e7e613dd88eaba
font_01_sfnt_off0000be05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE05 10832 bytes
SHA-256: 93b82733b189e74cc156f783ddb32fb2f3b6927e5cbe97c3018da2b6ad2d4577

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